Pans are great for establishing a scene. If your characters are positioned in zone 1, it might be nice to open your scene in zone 3 and pan to zone 1. That way, you’ll give your reader a sense of time and space before starting the dialogue between your characters.
Pans are also great for a big "reveal" moment. Let’s say Angie has just walked into zone 2 - and she spots that Hayes is stealing something important over in zone 3. We might see her do a shocked animation, then pan to zone 3 to show the reader what she’s seen Hayes doing.